CN102737847A - Light collecting device for a sensitized solar battery - Google Patents
Light collecting device for a sensitized solar battery Download PDFInfo
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- CN102737847A CN102737847A CN2011100898887A CN201110089888A CN102737847A CN 102737847 A CN102737847 A CN 102737847A CN 2011100898887 A CN2011100898887 A CN 2011100898887A CN 201110089888 A CN201110089888 A CN 201110089888A CN 102737847 A CN102737847 A CN 102737847A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The invention provides a light collecting device for a sensitized solar battery. Sunlight projected to an ineffective region can be collected into an effective region of a battery by adding a reflective or refractive member on a substrate above the ineffective region or embedding the reflective or refractive member in the substrate, thereby increasing total power of the battery. The structure of the reflective or refractive member can be planar, curved, serrated and the like. With the light controlling device adopted, a favorable effect can be achieved on a sensitized solar battery which usually has a large proportion of ineffective region. For a battery with an effective region occupying 70% of the total area, the total power can be increased by 30-43% with the light collecting device adopted, and the best collection effect can be obtained when the light collecting device provided by the invention is used in combination with a sunlight tracking device.
Description
Technical field
The present invention relates to solar battery technology, specifically, the present invention relates to a kind of design that increases sensitization solar battery module light utilization efficiency.
Background technology
Sensitization solar battery comprises DSSC, quantum dot sensitized solar cell etc. and utilizes light-sensitive material that thereby semiconductor is carried out the solar cell that sensitization produces photovoltaic performance.Wherein be representative with the DSSC, DSSC is simple, with low cost, the eco-friendly solar cell of a kind of production technology.DSSC generally comprises from the bottom to top: infrabasal plate, lower conductiving layer, bottom electrode, electrolyte, top electrode, last conductive layer and upper substrate; Top electrode is processed with the Nano semiconductor porous membrane that has adsorbed dyestuff, and last conductive layer and upper substrate are processed with the use transparent material.The efficient of the DSSC of small size can reach more than 11% at present, and simultaneously, because its manufacture craft is simple relatively, its cost will be a solar cell far below silicon.But, hindered the extensive use of this battery because still there are some problems in its encapsulation technology and modular technology.
Because present transparent conductive substrate does not have very high conductivity usually; Make large-area battery module and need the small size battery on the different base be processed parallel connection or cascaded structure usually; Perhaps will be produced on same suprabasil some small size batteries and form parallel connection or cascaded structure through being distributed in the conductive media between the battery or cutting off line; And these conductive medias with cut off line with and protective material can occupy certain area, thereby make effective light-receiving area of solar module reduce.
For increasing effective light-receiving area; The method that is adopted at present is normally through reducing the width of conductive media, partition line and protective material; But this mode receives the restriction of technical merit; Be difficult to obtain very high effective area ratio, and bring certain technical risk usually, for example efficient reduces, protects difficulty increase etc.
The present invention provides a kind of light collecting device, and the light that is incident to inactive area is collected into the effective coverage, thereby reduces energy loss, improves the power of battery, and this is equivalent under same battery production technique, improve the efficient of battery.
Summary of the invention
The purpose of this invention is to provide a kind of light collecting device that all light that expose to sensitization solar battery or battery module inactive area is collected into its effective coverage.
The objective of the invention is to realize like this: in the light incident substrate of sensitization solar battery or battery module or the reflection of upper surface space mounting or refractive component constitute sunlight collecting device; The feasible sunlight that exposes to inactive area etc. is transferred to the effective coverage, and wherein sensitization solar battery comprises that DSSC, quantum dot sensitized solar cell etc. have the solar cell of photosensitive materials.The reflection or refractive component be installed in inactive area directly over; Wherein inactive area refers to not have the zone of light-sensitive material or the zone that light-sensitive material is blocked; Comprise white space, protective material zone, regions of conductive material etc., directly over refer to the direction in light positive incident time source.
Wherein, reflection or refractive component can be positioned at the space, upper surface of light incident substrate, and can be adjacent substrate surface through mode such as bonding be connected with substrate fixes, and also can leave the substrate certain distance to fix through additional frame; Also can be arranged in light incident substrate, in making the process of substrate through using refractive index material different or reflecting material to process refracting layer, total reflection layer or reflector etc. corresponding to the position of battery inactive area in substrate.
Wherein, Reflection part can be the parts that have the plane of reflection or curved surface that utilize material with high reflectance to process; The angle of the tangent plane of optional position and cell plane should be between 0 ° to 90 ° in this plane or the curved surface; Reflection part can be that the metal material after the polishing or the element surface processed in any material are with methods such as plating, vapor deposition, sputter formation metallic reflective coating or directly paste reflectance coating; Mainly comprise one or more and alloy or compound in the metals such as silver, aluminium, stainless steel, titanium, nickel, cadmium, chromium, manganese, copper, zinc, germanium, tin, magnesium, gallium, gold, platinum, molybdenum, palladium, or be coated with the other materials such as glass, plastics, pottery, polymer of one or more and alloy or compound in the metals such as silver, aluminium, stainless steel, titanium, nickel, cadmium, chromium, manganese, copper, zinc, germanium, tin, magnesium, gallium, gold, platinum, molybdenum, palladium; Refractive component can be known lens element such as prism, concavees lens, convex lens, Fresnel lens etc.; It also can be element with special shape according to cell shapes and light distribution Demand Design; The material that these parts use can be a material known; Like transparent materials such as glass, acrylic resin, polyolefin resin, polycarbonate resins, these parts can be collected into the effective coverage with the light of inactive area through refraction or total reflection.
Wherein, For having the inactive area that rectangular shape maybe can be divided into rectangular shape; The reflection part of installing above it can have the inclined-plane that two symmetries are laid; Two inclined-planes overlap on the limit in inactive area centre position and enough sharply collecting sunlight as much as possible, limit and inactive area coincident at the inactive area edge, and the angle theta of two inclined-planes and cell plane formation should be between 5 ° to 89 °.
This light collecting device cooperates the sunshine tracking device can reach optimum efficiency, even but under the situation that does not have the sunlight follow-up mechanism, this gathering-device still can play collecting effect.For example; When using the plane reflection parts, when the angle theta of two inclined-planes and cell plane formation at 60 ° between 89 ° the time, through primary event and secondary reflection; Can make near high noon 2.6 to 6 hours; All are incident to the effective coverage that the sunlight in the battery open area can be collected battery fully, and in exceeding the certain hour scope of this scope, device still can play a part and collect the effect that strengthens.Wherein, It for effective coverage width and inactive area width ratio 5: 1 module; When θ is 60 °; Skew 20 degree scopes all can be collected into the effective coverage fully before and after the normal incidence light, and corresponding is exactly extremely just afternoon 1.3 hours 1.3 hours positive mornings, and embodiment 10 has provided and specified; When θ was 80 °, skew 45 degree scopes all can be collected into the effective coverage fully before and after the normal incidence light, and corresponding is exactly extremely just afternoon 3 hours 3 hours positive mornings, and embodiment 11 has provided and specified.
The present invention has following technique effect:
1, exposes to the sunlight of battery for scope at a certain angle; Can thereby its effective coverage that is collected into battery fully be avoided owing to the waste that exists inactive area to produce; And in exceeding the certain limit of this angular range, can play the collection reinforced effects of part.For the sensitization solar battery module of effective area rate 70%, use the present invention can its gross power be promoted 30% to 43%.
2, the present invention is intended to collect the sunlight of inactive area waste, and as far as the effective coverage, its light intensity increases less, the technical problems such as heat radiation that can not cause concentrating solar battery to face.
3, cooperate the sunlight follow-up mechanism to use, the effect of gatherer is maximized all the time.
4, the present invention can be applicable to that other have the solar cell of slab construction.
Description of drawings
Below, specify embodiments of the invention in conjunction with accompanying drawing, wherein:
Fig. 1 is the perspective view of sensitization solar battery module;
Fig. 2 is the side cutaway view of sensitization solar battery module;
Fig. 3 is that two adjacent cell reach inactive area sketch map therebetween in the battery module;
Fig. 4 is the sketch map after adding the double inclined plane reflecting parts above the partial invalidity zone in two adjacent cell;
Fig. 5 has added the battery module vertical view of double inclined plane reflecting parts for battery surface;
Fig. 6 is for adding the profile of double inclined plane reflecting parts above the battery inactive area;
Fig. 7 is for adding the profile of bi-concave reflection part above the battery inactive area;
Fig. 8 is for adding the profile of biconvex reflection part above the battery inactive area;
Fig. 9 is for adding the profile of double inclined plane refractive component above the battery inactive area;
Figure 10 is for adding the profile of bi-concave refractive component above the battery inactive area;
Figure 11 is for adding the profile of biconvex refractive component above the battery inactive area;
Figure 12 is for adding the profile of zigzag refractive component above the battery inactive area;
Figure 13 is embedded in the profile of double inclined plane reflecting or total reflection parts for substrate above the battery inactive area;
Figure 14 is embedded in the profile of zigzag refractive component for substrate above the battery inactive area;
Figure 15 is that θ is the sketch map that 60 ° double inclined plane reflecting parts are collected oblique incidence sunlight;
Figure 16 is that θ is the sketch map that 80 ° double inclined plane reflecting parts are collected oblique incidence sunlight;
Embodiment
Below, the preferred embodiment of the present invention is described.But the present invention is not limited in following embodiment.
Below enumerating what relate to concrete collecting effect or modular structure among the embodiment is that example describes with Fig. 1, sensitization solar battery module shown in Figure 2 all, and Fig. 1 is the module stereogram, and Fig. 2 is the module side pseudosection.The diagram sensitization solar battery comprises following major part from top to bottom: upper substrate 1 (sensitive surface), light anode 3 (effective coverage), electrolyte 5, to electrode 6, infrabasal plate 2, and, also have seal protection material 7 attached to the conductive grid on the upper and lower base plate 4.
Fig. 3 in the module two close on the unit and the sketch map of inactive area therebetween; Inactive area refers to produce the zone of photovoltaic effect; Comprise conductive grid, encapsulant and white space; Module for effective coverage length 40mm, width 9mm; When the inactive area width was 3mm, the ratio that its invalid accounts for the gross area was 30.2%, thus below each embodiment the effective coverage that various light collecting device is collected into light on battery will be set above inactive area; Fig. 4 is the sketch map after outside the inactive area substrate surface that two close between the unit, being provided with the double inclined plane reflecting parts, and Fig. 5 is the vertical view after outside the substrate surface in whole module void in whole zone, being provided with the double inclined plane reflecting parts.
Present embodiment is provided with the double inclined plane reflecting parts outside module two is closed on the substrate surface of the inactive area between the unit, as shown in Figure 6,9 is reflection part, and the reflecting surface of these parts is a magnetron sputtering aluminium film, and its visible reflectance is between 90% to 95%.The angle theta of inclined-plane and cell plane is when changing between 80 ° for 60 °; Under the sunlight of AM1.5 (a standard sun light intensity); When sunlight normal incidence; Account for the module of the gross area 30.2% for invalid, add that this reflection part compares with not adding this reflection part, gross efficiency can promote 32% to 40%.
Present embodiment is provided with the bi-concave reflection part outside module two is closed on the substrate surface of the inactive area between the unit, as shown in Figure 7,10 is reflection part, and the reflecting surface of these parts is a magnetron sputtering aluminium film, and its visible reflectance is between 90% to 95%.Reflecting surface arbitrarily the angle theta of any tangent line and cell plane between 0 ° to 90 °.Under the sunlight of AM1.5, when sunlight normal incidence, account for the module of the gross area 30.2% for invalid, add that this reflection part compares with not adding this reflection part, gross efficiency can promote 31% to 40%.
Present embodiment is provided with the biconvex reflection part outside module two is closed on the substrate surface of the inactive area between the unit, as shown in Figure 8,11 is reflection part, and the reflecting surface of these parts is a magnetron sputtering aluminium film, and its visible reflectance is between 90% to 95%.Reflecting surface arbitrarily the angle theta of any tangent line and cell plane between 0 ° to 90 °.Under the sunlight of AM1.5, when sunlight normal incidence, account for the module of the gross area 30.2% for invalid, add that this reflection part compares with not adding this reflection part, gross efficiency can promote 31% to 38%.
Present embodiment is provided with the double inclined plane refractive component outside module two is closed on the substrate surface of the inactive area between the unit, as shown in Figure 9,12 is refractive component.
Present embodiment is provided with the bi-concave refractive component outside module two is closed on the substrate surface of the inactive area between the unit, shown in figure 10,13 is refractive component.
Present embodiment is provided with the biconvex refractive component outside module two is closed on the substrate surface of the inactive area between the unit, shown in figure 11,14 is refractive component.
Present embodiment is provided with the zigzag refractive component outside module two is closed on the substrate surface of the inactive area between the unit, shown in figure 12,15 is refractive component.
The substrate that present embodiment closes on the inactive area between the unit in module two has been embedded in double inclined plane reflecting or total reflection parts, and is shown in figure 13, and 16 are reflection or total reflection parts.Reflection part can be the metal level of one deck high reflectance; Thereby the total reflection parts can add the material of one deck antiradar reflectivity below fully reflecting surface makes light that total reflection take place herein; Same, this double inclined plane also can make concave surface or convex surface or other curved surfaces into to adapt to different requirement.
The substrate that present embodiment closes on the inactive area between the unit in module two has been embedded in the zigzag refractive component; Shown in figure 14; 17 is the zigzag refractive component; The method is used in the narrower position of inactive area, can the glass processing engrail of inactive area top can be played light collecting effect.
Present embodiment explanation is when being provided with the double inclined plane reflecting parts above inactive area; If the ratio of effective coverage width and inactive area width is 5: 1; Two inclined-planes and cell plane angle are 60 °; When skew was no more than 20 ° before and after the normal incidence light, the sunlight that is projected to reflecting surface all can be collected into the effective coverage.Like Figure 15, the O point is positioned at the top of reflecting surface, when the included angle A OB of incident ray AO and vertical direction is 20 °; Reflection ray OC can just get at the other end that reaches the battery effective coverage, and when included angle A OB when 20 ° are reduced to 0 °, the C on the reflection ray names a person for a particular job and moves to the E point; Thereby this light can be collected into the battery effective coverage all the time, and is lower than the light at O point place, and its reflection ray will be parallel with OC; And below OC, thereby all throw the effective coverage that the light on inclined-plane so far all can be reflected onto battery, when AOB becomes negative value and continues to change; This effect will continue, and cross the extended line of EO until OA.Therefore, in 20 ° the scope of skew, all sunlight that expose to reflecting surface all can be collected into the effective coverage about the normal incidence direction.Because the sunlight direction per hour changes 15 °; This just is equivalent under the situation that does not have the sunlight follow-up mechanism; Battery is put over against solar noon sun, at noon before and after in 1.3 hours, the sunlight that is projected to battery surface all can all be collected; And after exceeding this time scope, the effect that solar collector strengthens can reduce gradually.
Present embodiment explanation is when being provided with the double inclined plane reflecting parts above inactive area; If the ratio of effective coverage width and inactive area width is 5: 1; Two inclined-planes and cell plane angle are 80 °; When skew was no more than 45 ° before and after the normal incidence light, the sunlight that is projected to reflecting surface all can be collected into the effective coverage.Like Figure 16; The O point is positioned at the top of reflecting surface, and when the included angle A OB of incident ray AO and vertical direction was 20 °, reflection ray OC can just get at the edge G point that reaches the battery effective coverage through secondary reflection; And when included angle A OB when 45 ° are reduced to 0 °; C on the reflection ray names a person for a particular job and moves down, and arrive then behind the substrate surface to move to the E point, thereby this light can be collected into the battery effective coverage all the time; Identical with embodiment 10 principles, being projected to the light that is lower than O point place must also can be collected.Therefore, in 45 ° the scope of skew, all sunlight that expose to reflecting surface all can be collected into the effective coverage about the normal incidence direction.This is equivalent under the situation that does not have the sunlight follow-up mechanism; Battery is put over against solar noon sun, at noon before and after in 3 hours, the sunlight that is projected to battery surface all can all be collected; And after exceeding this time scope, the effect that solar collector strengthens can reduce gradually.
Claims (6)
- In the light incident substrate of sensitization solar battery or battery module or upper surface space mounting reflection or refractive component constitute sunlight collecting device; The feasible sunlight that exposes to inactive area etc. is transferred to the effective coverage, and wherein sensitization solar battery comprises that DSSC, quantum dot sensitized solar cell etc. have the solar cell of photosensitive materials.It is characterized in that: the reflection or refractive component be installed in inactive area directly over; Wherein inactive area refers to not have the zone of light-sensitive material or the zone that light-sensitive material is blocked; Comprise white space, protective material zone, regions of conductive material etc., directly over refer to the direction in light positive incident time source.
- 2. like 1 described sunlight collecting device; It is characterized in that reflecting or refractive component is positioned at the space, upper surface of light incident substrate; It is fixing that can be adjacent substrate surface be connected with substrate through mode such as bonding, also can leave the substrate certain distance and fix through additional frame.
- 3. like 1 described sunlight collecting device; It is characterized in that reflection or refractive component are arranged in light incident substrate, in making the process of substrate through using refractive index material different or reflecting material to process refracting layer, total reflection layer or reflector etc. corresponding to the position of battery inactive area in substrate.
- 4. like 1 described sunlight collecting device; It is characterized in that utilizing material above inactive area, to process reflection part with high reflectance; The face that these parts are used to reflect can be plane or curved surface; The angle of the tangent plane of optional position and cell plane should be between 0 ° to 90 ° in this plane or the curved surface; Reflection part can be that the metal material after the polishing or the element surface processed in any material are with methods such as plating, vapor deposition, sputter formation metallic reflective coating or directly paste reflectance coating; Mainly comprise one or more and alloy or compound in the metals such as silver, aluminium, stainless steel, titanium, nickel, cadmium, chromium, manganese, copper, zinc, germanium, tin, magnesium, gallium, gold, platinum, molybdenum, palladium, or be coated with the other materials such as glass, plastics, pottery, polymer of one or more and alloy or compound in the metals such as silver, aluminium, stainless steel, titanium, nickel, cadmium, chromium, manganese, copper, zinc, germanium, tin, magnesium, gallium, gold, platinum, molybdenum, palladium.
- 5. like 1 described sunlight collecting device; It is characterized in that utilizing refractive index above inactive area, to process refractive component greater than 1 material; These parts are collected into the effective coverage through refraction or total reflection with light; These parts can be known lens element such as prism, concavees lens, convex lens, Fresnel lens etc.; Also can be the element with special shape according to cell shapes and light distribution Demand Design, the material that these parts use can be a material known, like transparent materials such as glass, acrylic resin, polyolefin resin, polycarbonate resins.
- 6. like 4 described sunlight collecting devices; It is characterized in that for having the inactive area that rectangular shape maybe can be divided into rectangular shape; The reflection part of installing above it has the inclined-plane that two symmetries are laid; Two inclined-planes overlap on the limit in inactive area centre position and enough sharply collecting sunlight as much as possible, limit and inactive area coincident at the inactive area edge, and the angle theta of two inclined-planes and cell plane formation should be between 5 ° to 89 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100898887A CN102737847A (en) | 2011-04-11 | 2011-04-11 | Light collecting device for a sensitized solar battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100898887A CN102737847A (en) | 2011-04-11 | 2011-04-11 | Light collecting device for a sensitized solar battery |
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| CN102737847A true CN102737847A (en) | 2012-10-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441174A (en) * | 2013-08-02 | 2013-12-11 | 北京航空航天大学 | Tracking-free solar condenser with front fisheye type sawtooth surface lens set |
| CN106409953A (en) * | 2016-11-04 | 2017-02-15 | 上海纳晶科技有限公司 | Solar cell film-coated copper wire gate current collector structure and preparation method thereof |
| CN107039188A (en) * | 2017-04-21 | 2017-08-11 | 安徽亿诺新能源有限责任公司 | A kind of nano-crystalline solar battery |
| CN113659019A (en) * | 2021-07-13 | 2021-11-16 | 中山德华芯片技术有限公司 | Flexible solar cell and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441174A (en) * | 2013-08-02 | 2013-12-11 | 北京航空航天大学 | Tracking-free solar condenser with front fisheye type sawtooth surface lens set |
| CN106409953A (en) * | 2016-11-04 | 2017-02-15 | 上海纳晶科技有限公司 | Solar cell film-coated copper wire gate current collector structure and preparation method thereof |
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| CN107039188A (en) * | 2017-04-21 | 2017-08-11 | 安徽亿诺新能源有限责任公司 | A kind of nano-crystalline solar battery |
| CN113659019A (en) * | 2021-07-13 | 2021-11-16 | 中山德华芯片技术有限公司 | Flexible solar cell and preparation method and application thereof |
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Application publication date: 20121017 |